Best DAC/AMP for two Fidelio X2HR's connected at the same time via splitter?

[Nobank]

I have two Fidelio X2HR's connected to a computer via a splitter (3.5mm), but even at 100% volume, is too quiet; even with only one X2HR connected. Only having one connected, makes it a bit louder (about 5-8% louder), but still too low. Tried with 3 other desktop pc's too. So I need an amp or dac/amp.

Any amp or dac/amp you recommend for X2HR's? They are only used for movies

 

[MarkParity]

Something like the Behringer ha400. Its very reasonably priced and allows one in and up to 4 outs, with separate volume controls for each output channel.

No idea if its any good, I don't own one, but the reviews look OK though.